Agriculture, electricity, mining
The most effective shots are delivered to an animal's vital organs—heart and lungs. In large game animals, these organs lie in the chest cavity behind the front shoulder. A lung shot is the most effective shot for big game. The area of the vital organs also contains major blood vessels and arteries.
The one that could affect human population would be :
A. Deadly virus emerges that can pass from human to human.
This will greatly decrease the amount of human population
C. Nuclear war breaks out between two nations
This will kill a lot of people and also potentially creating genetic mutations for the next generation
D. Immigration to united states from china increases
This will make it harder for the population to get the resources that they need for their living
hope this helps
Carnegie was the steel industry.
However, the Song dynasty was difficult to conquer because of the strategic location of Xiangyang, which became a vital position for Kublai to capture and hold. The city guarded the waterways of South China because the Han River was a major tributary into the Yangtze River.
